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Android – Select multiple photos from Gallery

Today i am going to discuss about implementation of selecting multiple photos from Photo Gallery. You know, i have searched enough to find out a solution for selecting multiple images ...
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Logging Hibernate SQL

There are two well-known ways to log Hibernate SQL in Grails; one is to add logSql = true in DataSource.groovy (either in the top-level block for all environments or per-environment)             dataSource ...
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Introduction to PostgreSQL PL/java

Modern databases allow stored procedures to be written in a variety of languages. One commonly implemented language is java.N.B., this article discusses the PostgreSQL-specific java ...
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What is HMAC Authentication and why is it useful?

To start with a little background, then I will outline the options for authentication of HTTP based server APIs with a focus on HMAC and lastly I will provide some tips for developers ...
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Investigating Deadlocks – Part 1

I’m sure we’ve all been there: it’s late, you’re hungry, your server has hung or your application’s running at snail’s pace, and there’s someone breathing down your neck ...
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Locking with a semaphore : An example

Concurrency is one aspect that brings along interesting challenges along with it. If not correctly handled, it brings about race conditions that will baffle people because those issues ...
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Sending Event Invitations With Seam

These days one of my colleagues had problems with sending event invitation using mail templates with seam (version 2.x). In basic this should not be a hard task, so I will in short ...
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Compact Off-Heap Structures/Tuples In Java

In my last post I detailed the implications of the access patterns your code takes to main memory. Since then I’ve had a lot of questions about what can ...
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Should you care about Conway’s Law?

Conway’s Law says that“organizations which design systems (in the broad sense used here) are constrained to produce designs which are copies of the communication structures of ...
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Eclipse refactoring on steroids

In my last post about common Java violations, I listed a set of mistakes that java developers tend to make. While refactoring a Java project with the objective to resolve those violations, ...
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